Breathless

A foul-mouthed, violent gangster who runs an illegal money-lending outfit. He wields intimidation and physical force, yet reveals moments of tenderness toward his nephew Hyung-in and Yeon-hee. His backstory includes an abusive father and a family history that haunts him, fueling loops of anger. On his last day as a debt-collector, he plans to quit and reunite with his family, and the epilogue strongly suggests his death.

A high school student who confronts Sang-hoon after an early violence, spunky and outspoken; she and her family struggle with paying rent; she forms a fragile friendship with Sang-hoon.

Leader of the loan-shark operation who contemplates retirement and opening a restaurant; his tough exterior masks a desire for a better life.

Sang-hoon's nephew, whom he adores; his presence anchors Sang-hoon's softer impulses and family ties.

A junior colleague pressured into debt collection; hesitant and easily manipulated; his actions contribute to the violence that marks the film.

Sang-hoon's abusive father, a backstory figure who stabbed Sang-hoon's sister; his presence and history shape the film's exploration of family and violence.

A figure in Yeon-hee's life whose fate and presence influence the family dynamics and Yeon-hee's resilience.

A minor school figure who contrasts with the street-world depicted in the film, highlighting the gap between education and survival.

One of the loan-defaulters involved in the debt cycle that drives the plot.

Another debtor whose misfortune illustrates the wide reach of the debt network in the story.

A minor recurring character in the world of street life and food stalls, reflecting the film's urban texture.